Re: [PATCH] bpf: support BPF_PROG_QUERY for progs attached to sockmap

From: zhudi (E)
Date: Sat Oct 23 2021 - 02:05:47 EST


> On Fri, Oct 22, 2021 at 3:34 AM Di Zhu <zhudi2@xxxxxxxxxx> wrote:
> >
> > Right now there is no way to query whether BPF programs are
> > attached to a sockmap or not.
> >
> > we can use the standard interface in libbpf to query, such as:
> > bpf_prog_query(mapFd, BPF_SK_SKB_STREAM_PARSER, 0, NULL, ...);
> > the mapFd is the fd of sockmap.
> >
> > Signed-off-by: Di Zhu <zhudi2@xxxxxxxxxx>
>
> The feature looks fine, but it needs a selftest.

I will add it in my patch, thanks